DIY Network

How to Rough-In Shower Plumbing

Use these step-by-step instructions to remove old plumbing and rough-in new control valves.

More in Plumbing

  • Time


  • Price Range

    $100 - $250

  • Difficulty

    Moderate to Hard


Step 1: Remove the Lines and Run New Lines

Cut the old supply lines with a close-quarter tubing cutter.

Run new copper supply lines for the control valve.

cut old supply lines

Step 2: Attach the Control Valve and Solder Joints

Attach the control valve to a backer board (Image 1).

Flux the copper and fittings, then solder all the joints (Image 2).

Step 3: Tighten the Connections

Wrap Teflon tape around the threaded copper fittings (Image 1) and hand tighten them to the valve, then use adjustable wrenches to make the seal water-tight (Image 2).

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